It should do as mine works on my 7Dii but the AF is so slow I just don't bother using it. My lens firmware is up to date as far as I am aware as well.

I got my first Dartford Warbler photos yesterday 600mm with hardly any crop. Hardly any light so down to 1/500 but still handheld in OS1. I really do think the OS on this lens is awesome and the IQ is not bad either.

Picked up a used copy on eBay - so far, so good. We have a winter storm coming through (I know, it's April...) and there are gales coming off Lake Superior into Canal Park. Lots of wave action in the usual places.

A sure sign of spring is the return of the Osprey's. I initially thought this male was making a delivery for his mate, but turns out he decided to more than eat his fill, to her escalating vocal displeasure. She eventually dropped down to take her share of lunch.

Hello all, I just purchased this lens and looking forward to using it later on today. I do have somewhat of a technical question that maybe someone can answer : I read in a review somewhere that it is sharper on an crop sensor than a full one because the pixels are packed more densely in the former one than the latter one. Is that accurate? I am not much of a tech person but this has me thinking. I welcome everyone's input.

gv0861 wrote in post #18608967Hello all, I just purchased this lens and looking forward to using it later on today. I do have somewhat of a technical question that maybe someone can answer : I read in a review somewhere that it is sharper on an crop sensor than a full one because the pixels are packed more densely in the former one than the latter one. Is that accurate? I am not much of a tech person but this has me thinking. I welcome everyone's input.

I'm not a pixel peeper, so I can't really say anything to the veracity of your statement. But on my 5D III body, the lens produces very sharp images and better still from someone else who posts here with his 5D IV. To the contrary, I haven't seen that many sharp images out of crop bodies. But, of course, there are many factors that go into producing sharp images, so crop body may have nothing to do with it.

Maybe I have a different definition/tolerance of “sharp”, but as someone that has had this lens since it was available, and shot it with 2 different crop bodies, I’ve been very pleased with the level of detail. I’d like to think I’ve shown in this thread it can produce satisfactory results on a crop sensor. Does it need a decent amount of light, yes. Is it going to deliver prime level or “L” level sharpness, no. Is the cost vs benefit there having native 600mm native focal length, IMO yes. Now that I’ve had the chance to try this on a full frame, it seems to produce some slightly better resolution, but curious if that is more a factor of the sensor or the lens.

gv0861 wrote in post #18608967Hello all, I just purchased this lens and looking forward to using it later on today. I do have somewhat of a technical question that maybe someone can answer : I read in a review somewhere that it is sharper on an crop sensor than a full one because the pixels are packed more densely in the former one than the latter one. Is that accurate? I am not much of a tech person but this has me thinking. I welcome everyone's input.

All lenses, well perhaps with very few exceptions, but pretty much all lenses are sharper in the center, and then the detail tends to fall off and distort towards the outer edges.

With that being our axiom, it is thus a very thing to deduce that all lenses will provide slightly sharper results on a crop center as we are selecting only the best part of the optics, those that lie in the center, to reproduce our image.

I put clear tape over my lens switches so as they don't rub against my body or clothing and change - all covered except the focus range setting and saw it had been accidentally switched to 2.8 - 10m.... Doh! not sure how long tape is good if you are happy with your settings and offers a bit of weather sealing I suppose. All taped up now

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